1264895522 has 12 divisors (see below), whose sum is σ = 2085509958. Its totient is φ = 574952400.

The previous prime is 1264895507. The next prime is 1264895561. The reversal of 1264895522 is 2255984621.

It can be written as a sum of positive squares in only one way, i.e., 954748201 + 310147321 = 30899^2 + 17611^2 .

It is a super-3 number, since 3×1264895522³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2613179 + ... + 2613662.

Almost surely, 2^1264895522 is an apocalyptic number.

1264895522 is a deficient number, since it is larger than the sum of its proper divisors (820614436).

1264895522 is a wasteful number, since it uses less digits than its factorization.

1264895522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226865 (or 5226854 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 1264895522 is about 35565.3697014385. The cubic root of 1264895522 is about 1081.4793176752.

The spelling of 1264895522 in words is "one billion, two hundred sixty-four million, eight hundred ninety-five thousand, five hundred twenty-two".